398 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



Adult male. — Wing, HS.** 



Adult female. — Wing, 141; tail, 117; exposed culmen, 34; tarsus, 

 20.5; outer anterior toe, 1,9.^ 



Three other specimens, with sex undetermined, measure as follows: 

 Wing, 135.5-141.5 (139); tail, 115-127 (120); exposed culmen (bills 

 all defective); tarsus, 19.5-20(19.8); outer anterior toe, 18.5-19.5 

 (19). All are alike in coloration, except that in some (perhaps 

 younger birds) the capistrum is decidedly rusty. 



Northwestern Colombia, near eastern extremity of Isthmus of 

 Panama (Rio Truando ; Truando Falls ; Rio Atrato) . 



Monasa pallescens Cassin, Proc. Ac. Nat. Sci. Phila., 1860, 134 (Cordilleras of 



the Rio Truando, n. w. Colombia; coll. Ac. Nat. Sci. Phila.); 1864, 287, pi. 4 



(Rio Atrato). — Salvin and Godman, Biol. Centr.-Am., Aves, ii, 1896, 521, 



part (Rio Truando). 

 [Monasa] pallescens Sclater and Salvin, Nona. Av. Neotr., 1873, 106, part. — 



Sharpe, Hand-list, ii, 1900, 200, part. 

 M[onasta] pallescens Cabanis and Heine, Mus. Hein., iv, heft 1, 1863, 128, 



footnote (Rio Truando). 

 Monacha pallescens Sclater, Mon. Jacam. and Puff-Birds, 1882, 157, part (not 



pi. 53 nor descr., which= if. sdaim); Cat. Birds Brit. Mus., xix, 1891, 206, 



part (in synonymy only). 



MONASA MINOR (Nelson). 



MARRAGANTI NUN BIRD. 



Similar to M. pallescens but color of wing-coverts and under parts 

 decidedly darker. Similar also to M. similis, but color of wing- 

 coverts (especially the under wing-coverts) decidedly paler, and 

 black of foreneck and upper chest much intermixed with gray. 



Adult male. — Lores (except portion immediately in front of eye) 

 and anterior portion of forehead white, tinged or stained with dull 

 cinnamon or fawn color; rest of forehead dull black, passing gradu- 

 ally into more sooty or slaty black on crown, this gradually becom- 

 ing more and more tinged with dull slate toward the upper back, 

 which is dull slate color; rest of head and neck black, the foreneck 

 intermixed, longitudinally, with slate-gray, the remaining under 

 parts Hght slate-gray or deep plumbeous, shghtly paler on abdomen, 

 darker, or intermixed with blackish slate, on under tail-coverts; 

 lower back, scapulars, rump, and shorter upper tail-coverts uniform 

 slate-gray; wing-coverts Ught slate-gray (between no. 6 gray and 

 neutral gray) ; remiges, rectrices, and longer upper tail-coverts black, 

 the two innermost secondaries with outer webs deep slate-gray, the 

 third (sometimes fourth also) edged with the same; under wing- 

 coverts light neutral gray, becoming still paler toward edge of wing; 

 bill red; legs and feet slaty blackish (in dried skins) ; length (skins), 



o One specimen (the type); specimen defective. b One specimen. 



